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Finding the Fourth Proportional to 70,975.12, 97,843.86 and 55,841.68

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Solution

The fourth proportional to 70,975.12, 97,843.86 and 55,841.68 is: 76,981.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,975.12 : 97,843.86 = 55,841.68 : x
  2. Step 2: Convert to fraction form
    70,975.12/97,843.86 = 55,841.68/x
  3. Step 3: Cross multiply
    70,975.12x = 97,843.86 × 55,841.68
  4. Step 4: Simplify right side
    70,975.12x = 5,463,765,520.08
  5. Step 5: Solve for x
    x = 5,463,765,520.08/70,975.12
  6. Step 6: Final answer
    x = 76,981.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.